Car-truck construction.



J. A. JACKSON. CA R TRUCK CONSTRUCTION. APPLICATION FILED JUNE 24. 1915-.

* a SHEETS-SHEET 1.

2a Z6 Z6 24 modal Patented Mar. 7,1916.

J. A. JACKSON. CAR TRUCK-CONSTRUCTION. APPLICATION FILED 1M5 24.19isf I 11,174,936. Patented Mar. 7,1916. a SHEETSSHEET 2.

III lllllllvl. W

J. A. JACKSON.

CAR TRUCK couzmucnon. APPLICATION FILED JUNE 24' 1915- 1.174936; -Paten ted Mar. 7,1916.

3 unns-suan 3.

' To all; 16am, to may concern.

y, STAT Es PATENT cur os.

10min. JACKSON, or cnns'rnn'roiv, INDIANA, assrenon or NE-HAI|F at snnisrrau DAVIDSON, or onrcaoo, ILLINOIS.

CAR-TRUCK CONSTRUCTION.-

- Be it known that 1,,JOHN A. JAcKsoN, a

" citizen of the United States, and a resident ofChesterton, in the State of Indiana, have invented'certain newand useful Improvementsjin Car-Truck Construction, of which the following is a specification.

":My presentinvention relates to railway car trucks in general and more particularly to car trucks embodying cast steel members and has particular reference to the provi- 1 sionof an improved type of truck employing a greatly reduced number of parts and one 7 wherein the load may be carried more directlyupon' the truck side frame members "rather than indirectly through a center bearing. I v The principal objects of my present invention are' theprovision of an improved form of car truck construction wherein the side frameand transom are made integral whether or not a bolster isused, the proviprevent warpm sion of an approved construction characterized as above wherein journal boxes are made integral, with the side frame members save for theirlower halveswhich are diyided' from the main structure along the axes of the wheel centers; the provision of an approved structure of-the class referred to wherein the load may be carried more directlyuponfopposite sides of the frame with. a view to prevent teetering and to of the truck'both as an entirety, and re atively to the body and to the-track; the provision of an improved form of.side bearings adapted to operate under constant pressure, to allow thetruck to swing freely onrounding'curves, but to I ful in connection with said truck frame and said side bearlng constructions, and one oppose resistance to any longitudinal move-- ment of the body relatively to the truck whenrunning on a straight track; the provision of' an improved type of bolster usewhich will oppose a yielding resistance to and compensate for any tendency of the teeter relatively to the-truck. In attaining .the objects stated, as well as certain other benefits and advantages to be below disclosed and overcoming certain objections including those above referred to,

I have provided the constructions illustrated Figure 1 is a plan view of a car truck em- Specification of ietters Iatent. Application filed June 24, 1915. Serial No. 85,992.

the: accompanying drawings, wherein-i fPatented Mar. '7. 191 a bodyin my improvements in preferred form, ig. 2 is an elevational view part1 in section taken on the line 2-2 of Fig. 1-; Fig 3 is a detailed elevational view of a preferred form of roller side bearing used with a a the device of Fig. 1; Fig. 4 is a sectional view of a modifiedform of side bearing;

Figs. 5 and 6 are respectively planand side elevational views of a preferred form of part of the structures, of

bolster formin Figs. 1 and 2; ig. 7 is an elevational view of a modified form of bolster construction and Figs. 8 and 9 are respectivel 'plan and elevational views of a modifie form'- of truck construction.

, Referring first more particularly to Figs.

1 and 2,itwill .be observed that I have here illustrated a construction wherein the transom 20, side: frame members 21-21, and the upper halves 22-22 of the journal boxes are all cast integrally, the lower halves of the journal boxes being secured to the'upper halves as indicated at 23, whereI have shown bolts, the line of division between the journal box portions being preferably'along the axes of the front and rear axles 24 and'25 on whichthe wheels 26-26. and 27-21 are mounted. On inspection of Fig. 2, it will be observed thatthe car body 28 has been illustrated diagrammatically and thetransom 20 apertured as indicated at 29, for the center bearings, car, side bearing membem 30-30 which may be of any suitable and convenient type, being carried by such body. The transom 201s rovided at its outermost portions 31-31 wilth yokes 32-32 which I provide as supports for yokes 33-33 of the equalizing members 34-34 of the bolster (to be more particularly described in conthe bolster members may oscillate upon such plates. The equalizing members 34 are pivotally mounted, as indicated at.3833 in "the main bolster member 39, which carries at its outer portions 40-40 boxes ada ted to receive the truck side bearing mem ers ll-41 withwhich the side bearing mem bers 30-30 co-act, the transom 20 being apertured to allow the passage of such boxes therethrough.

and 6) wearing plates v 4 Referring now more particularly to Figs. 3 and 4, wherein I have illustrated a preferred type of construction of the truck sidebearing members 41, it will be observed that I here make use of a stationary cylindrical center 42 having at each end extensions 43 adapted to engage slots 44 in the boxes 40,

' and thus be held against rotation, an outer cylindrical shell or casing 45 with which the -members 30 contact in use, a series of interposed rollers 47, and a retainer 48 suitably secured in positionby bolts 49 by means of which the members are held in assembled relation, to the endthat the casing 45 may rotate freely upon the cylindrical center, though itisobvious that there will be no' I movement of'the bearing as a Whole relatively to the-truck. trated a slight modification of theshell 45,

wherein instead of the smooth surface contacting with the members 30, the shell 50 is provided with teeth 51 engaging a rack 52 formed on suchmember 30, for purposes to be explained in connection with the'operation of the device. Referring now more particularly to Figs. 5 and6, wherein I have illustrated the details of my preferred form of bolster con struction' it will be .observed'lthat the members;34.34 are provided with seats 535 3.

adapted to receive extensions 53-53 of the bolster'me nber 39, and that the flanges 55,

56, and 57,58 of the members apertu-red to'receive pins 59 and 0 whereby. the parts 34'34' are maintained in the pivotal and oscillatory relation to the member 39'indicated at38, and at the sameatime are restrained from longitudinal movement" relatively thereto in the event of undue Wear or breakage of such pins 59 and 60 in service. For the purpose of maintaining 'the members 34-34' improper, relative relation to the member 39, absorbing shocks, and transmitting and equalizing any strainreceived by eithervof the members 34 to the other of' such members. and thus at alltimes supporting the load substantially constantly and'equally upon the bearings 4141,'I provide in the member 39 a box 61 wherein I mount as here shown a plurality of springs 62 with a flanged cap plate 63 upon which rests one end (34 of themember 34, flanged as indicated at 65 and 66, and between such flanges the end .67 Qf'tllfi member 34'. i For the purpose of further preventing-longi-' 'tudinal-movcmentbetween the members 34 and 34, the member 34 is provided with recessesa's indicated at 'ZQ and 71 to receive flanged extensions 72 and of the member 34,;and for the purpose of ma mitting free vertical-movement between two members 63,

64- and. 167,-, it; Will be observed that theykare I rand/Z7.

respectively slightly beveled as indicated at Referring now more particularly to Fig.

that I have here shown the '39, that the sai 'In Fig. 4 I have illus- 34-34 are I the contact .tween the body will be overcome by the contact engagement 7, wherein I have illustrated adaptation of my improved bolster for service in connectiop with the well known diamond arch bar type of truck frame, it will be observed e apparent thatthe .con-

tain extent to that of Figs. land 2, and that in lieu of the bolster Imake use'o'f a single pair of yokes 90-90 blocks 40 and seats 93-+93 provided in the said yokes.

perceived that while a center bearing is con= veniently'used with my improved ,form of truck constructiom'as indicated at 29 (Fig. 2), the load may be carried to such 'an extent with the bolster member is providedand coiiperating yokes From the foregoing description it will'be construction adapted for use without-a truck bolster, it will struction here illustrated is similar to a c'ersupported by pins 91-91 in the transom 30', and that in extensions -92-92 of "such transom I mount downwardly flanged blocks 3 carrying side wbearings 41'4 1,- W interposing springs 94-94 between such as desired by the side bearings 21.through that by virtue of the transom-{side frame members, and journal boxes being cast integrally, a most rigid construction is attained, one wherein the several pairs of of the members 30 therewith;

wheels with their respective axles are firmly maintained in properrelative'position and yet the truck framing is readily demountable from such axles, and wherein there can be no appreciable distortion'of the frame allowing the Wheels onone side to-tend to travel ahead of those on the opposite side;

that by virtue of the angular arrangement of the side bearings relatively to each other' as indicated at 41", and 41", and at 41 and 41", and on radii of the center bearing, the

truck is at all times freeto move pivotally relatively to the body on roundinga curve,

but on the other hand in the event of any a tendency toward longitudinalmovement be and truck, such tendency between the members 30 and 41 and 41 and between the members 30 and 41 and i 41: and that any strains received by either of the bolster members 3434, are, by virtue of the springs 62 and the engagementof, such mcrnbers 3434', transmitted and equalized in such amanner as to maintain of my invention will be obvious to those vwho are skilled in the art to which it pertains ,without further particularized specifi- 'rcation. Ha ing'thus described my invention and illi1strated;.;it s use what I claim is new and desire t'o-secmeby Letters Patent is the following: v l

lrIna car. truck, in combination with a I pair of axlesandwheels thereon, a framing- 1 {comprisinganintegral transom, side frame membersand journal boxes, separate journal '16 connecting said last mentioned portions with said framing, and a pair of bolster members. Leach having one end bearing on one of said side frame members and the otherend bear-1 ingon a spring an means intermediatesaid'. ends for sustaining the car body. 1 2, In a jcartruck, in combination with a 'box portions ooactingthe'rewith, means for 7 pair of axles and wheels thereon, side frame 1 members, a connection therebetween, jour- {253] .mil boxes, and a pair of bolster members each having one end bearing on oneof said i side frame members and the-other end hearing on a spring and means intermediate. said W; ends for sustaining the car body. v

3. In a car truck, in combination with a pair of axles and wheels thereon, side frame members, a connection therebetween, and

journal boxes, an equalizing bolster comprising relatively movable members bear- -mg on saids'ide framemembers and adapt-. "ed to sustain a car body.

4; In m truck,.in combination with a if Ipair of axles and wheels thereon, side frame mem be'rs, a connection therebetween, and 40.

journal boxes, an equalizing bolster bear- =1n on said side frame members and provied between itsends with a plurality of l iside bearings adapted to sustain a car body.

5. In a car truck, in combination with a f pair of axles and wheels thereon, side frame, 'members, a C0IlIl8ClJ1O11 therebetween, and gqournal boxes, an equalizing bolster bearing onsaid ;side frame members andprovided between its ends with a plurality of I relatively tain a car'body,

sets of, side bearings angular-1y disposed to -each other and adapted to sus- 6. In a car truck, in combination with a, pair ofaxles and wheels thereon, a transom, a bo'lster. membenjand a carbody having side bearing members thereon, a pluralityof truck side "bearings. radially ar ranged'fwith. resp ect to the point about a gdwhichi :the 't'ruckrmoves relatively to the i fixedmg'ainst longitudinal movement therev on,; butada pted to move substantially vercar "body carried by said gbolster member tieallyfrelatively to jtlieitransom', and conktaetingywith{said sidebearings adapted to continuously isustain the weight of body, whereby canting (in said truck side a bolster member and a car body having side bearing members thereon, truck side bearings carried by said .bolster 1nember on each side thereof, each comprising a mem- -ber fixed against longitudinal movement relatively to said body, and a plurality of cylindrical members radially arranged with respect to the point about which the truck moves relatively 'to the car body adapted to rotate on said fixed member and contact with one of said car side bearings and adapted to move substantially vertically relatively tothe transom. v I

8. Ina car truck, in combination with a pair of axles and wheels thereon, a framing, and a car body having side bearing members thereon, a plurality of angularly dis posed side bearings'carried by each side of said framing, each comprising a member fixed against longitudinal movement relatively to said body, a cylindrical member adapted to rotate on said fixed member and contact with one-of said car side bearings,

said fixed and rotating members, whereby relatively to saidbody but restrained from longitudinal movement relatively. thereto.

9. In a car truck, in combination with a pair of wheels and axles thereon, side frame members, a connectiontherebetween, and journal boxes, an equalizing bolster comprising a member adapted to sustain the weight of the car body, a plurality of equalizing members supporting said last mentioned member and movable relatively thereto. one of the ends of each of said equalizing members beingsu ported by one of said side frame members t e opposite end being supported by a yieldingly resistant device. i

10. In a car truck, in combination with a pair of wheels and axles thereon, side frame members, a connection therebetween, and

journal boxes, an equalizing. bolster comand antifriction means inserted between' of said side frame members and the oppo- I site end interlocking and being supported by a plurality of springs, whereby strains sustained by either of said equalizingmembers are transmitted to the other thereof.

'11. :In a car truck, in combmation with a pair of wheels'and axles thereon, side frame members, a connection therebetween, andv journal boxes, an equalizing bolster 'com- 11.

and being supported by a plurality of 10 springst arranged vertically in said box,

whereby strains sustainedby either of said the equalizing members are transmitted to other thereof. i

In testimony lwhereof l'. hmie hereurito the presence of the two 15 signed my name in subscribed witnesses. v JOHN A. JACKSON;

' Witnesses:

, WILLIAM GOLDBERGER,

DONALD C. WILLIAMS. 

